Log customizing

[Ithilion]

Hi, I think the logging functionality of the CLI could be improved. These things come to my mind:

• a log-level selector (INFO, WARN, etc.)
• whether or not to list every file/chunk being processed (currently at least one of the two is displayed, creating huge logfiles, especially on first backups)

[gilbertchen]

The current default setting is to display INFO, WARN, and ERROR logs. The -v switch adds TRACE and -d adds DEBUG. More switches should be added, for instance, to show ERROR logs but not others.

Independent of the log-level setting I think there should be another selector that is based on the log id (the first argument passed to the LOG_* functions). For example, for the following log line in duplicacy_chunkuploader.c:

    LOG_DEBUG("CHUNK_UPLOAD", "Chunk %s has been uploaded", chunkID)

if you enable the log id CHUNK_UPLOAD, then the log message 'Chunk xxx has been uploaded' should be shown regardless of what log level is currently enabled.

[sergeevabc]

+1 for a switch to output errors only. Cannot stress enough how important such switch is when one backs up zillions of files and just a few are troublesome.

[ghmia]

+1 for a switch to output more basic info only with -log. No need to report every file uploaded.